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Finding the Fourth Proportional to 315,574.42, 473,365.81 and 105,212.42

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Solution

The fourth proportional to 315,574.42, 473,365.81 and 105,212.42 is: 157,820.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,574.42 : 473,365.81 = 105,212.42 : x
  2. Step 2: Convert to fraction form
    315,574.42/473,365.81 = 105,212.42/x
  3. Step 3: Cross multiply
    315,574.42x = 473,365.81 × 105,212.42
  4. Step 4: Simplify right side
    315,574.42x = 49,803,964,913.76
  5. Step 5: Solve for x
    x = 49,803,964,913.76/315,574.42
  6. Step 6: Final answer
    x = 157,820.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.